The difference between 2005 and previousness are more accidents,wider area,severer health impact.The category of accident was mainly individual supply well in suburban.

• 2005年全市生活饮用水污染事故较历年发生起数多、影响范围大、对人体健康危害严重,事故多发生在近郊及远郊区(县)的自备水源。